function drawVisualization() {
    // Create and populate the data table.
    var data = google.visualization.arrayToDataTable([
      ['ID', 'Life Expectancy', 'Fertility Rate', 'Region',     'Population'],
      ['CAN',    80.66,              1.67,      'North America',  33739900],
      ['DEU',    79.84,              1.36,      'Europe',         81902307],
      ['DNK',    78.6,               1.84,      'Europe',         5523095],
      ['EGY',    72.73,              2.78,      'Middle East',    79716203],
      ['GBR',    80.05,              2,         'Europe',         61801570],
      ['IRN',    72.49,              1.7,       'Middle East',    73137148],
      ['IRQ',    68.09,              4.77,      'Middle East',    31090763],
      ['ISR',    81.55,              2.96,      'Middle East',    7485600],
      ['RUS',    68.6,               1.54,      'Europe',         141850000],
      ['USA',    78.09,              2.05,      'North America',  307007000]
    ]);

    var options = {
      title: 'Correlation between life expectancy, fertility rate and population of some world countries (2010)',
      hAxis: {title: 'Life Expectancy'},
      vAxis: {title: 'Fertility Rate'},
      bubble: {textStyle: {fontSize: 11}}
    };

    // Create and draw the visualization.
    var chart = new google.visualization.BubbleChart(
        document.getElementById('visualization'));
    chart.draw(data, options);
}
